#include <stdio.h>

int num[29];
int n;
int search(int k)
{
    int where = -1;
    for(int i=0;i<n;i++)
    {
        if(num[i]==k)
        {
            where = i;
            break;
        }
    }
    return where;
}

int main()
{
    int k;
    scanf("%d %d",&n,&k);
    for(int i=0;i<n;i++) 
        scanf("%d",&num[i]);
    if(search(k)==-1)
        printf("Not Found");
    else
        printf("%d",search(k));
    return 0;
}